Reznor OUH 100, Инструкция по установке и эксплуатации

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The minimum free area of the low level natural ventilation opening
shall be:
2cm2 for each kW of rated heat input
The low level natural ventilation opening should be situated on an
external wall and be within 1000 mm of floor level.
The following table provides specific data for each heater model as -
1.11 Air supply
Consideration must be given to the provision of air for the purposes of combustion and ventilation of the heated space,
plant room or enclosure where heaters are to be installed. It is a requirement that the area where the air heater is
located must have a permanent air vent of negligible resistance direct to the outside air.
Such air vents must be positioned so as not to become blocked or flooded, nor should they be placed so as to
introduce undesirable matter (e.g. flammable, volatile, or aggressive chemicals/compounds or potentially hazardous or
harmful substances) either direct from the outside, or through their proximity to an adjacent extraction system.
It is strongly recommended that BS6230 is referred to for further information concerning ventilation requirements
Where mechanical ventilation is used it is a requirement that the inlet is of the mechanical type, and the outlet is either
mechanical or natural.
1.11.1 Heaters installed within the heated space.
Where heaters are installed within the space to be heated (i.e. not a plant room or enclosure) then:
1.11.1.1 Natural Ventilation Openings to the Heated Space.
If the heated space design air change rate is less than 0.5 air changes per hour then provision for low level natural
ventilation openings will only be necessary.
Minimum Free Area of ventilation opening
Model High Level cm² Low Level cm²
40 None 88
60 None 128
70 None 166
90 None 192
100 None 230
The design air change rate of the heated
space is 0.5 air changes per hour or greater The design air change rate may be satisfied by natural
infiltration or by mechanical ventilation
OR
Combustion air or heater related ventilation air will not be required if -
The design air change rate of the heated
space is less than 0.5 air changes per hour
Where the heated space has an air change rate of less
than 0.5 air changes per hour then it will be necessary
to provide either natural ventilation openings to the
heated space (section 1.11.1.1. refers) or the mechanical
ventilation of the heated space (section 1.11.1.2. refers)
OR
Combustion and General ventilation will be required if -